My girlfriend has a 97 Grand Prix GT with the 3.8 non-supercharged. Auto trans. The other day, she was running it to warm it up before going to work and out of nowhere, it just died. I went to work on it, it does have spark and air. What it's missing is fuel. The fuel rail is bone dry. I did the usual; checked all fuses related to the fuel pump and all were OK. Put in a fuel pump relay and that didn't cure it.
Today I did some more work on it and am really confused as to what is going on. When the key is turned on, the relay energizes for a few seconds as it should, and shuts off. While cranking, the relay is energized. But I get nothing at the fuel pump itself voltage wise. I hooked up my Snap-On scanner and used it to command the relay on, and still nothing at the pump. I admit I need to double check that my scanner is actually turning the relay on when I tell it to.
I'm thinking the obvious answer here is the power wire (grey I think it is) that supplies power to the pump has an open in it. I'm not sure where exactly that would be which is why I'm here. I admit I'm spoiled and have the factory service manuals for all my vehicles but she doesn't have one for hers; all we have is a poopy Haynes book. Also of note here is that the car has a few trouble codes; misfires and a transmission component slipping code I haven't gotten to yet. It does have a crankshaft position sensor code but the number escapes me at the moment...plus I have spark so I don't think that's it but figured I'd throw it out there in case it does.
Can anyone tell me where GM ran the wiring for the fuel pump back to the pump so I know where to look? Also is this a common problem on these cars and is there a common area where a break may have occurred? I know it doesn't have that fuel pump resistor because it isn't supercharged. Thanks!